小编sum*_*rya的帖子

我有一个Edit Text数字只能介于两者之间0-59,没有其他数字会输入Edit Text,我试过text-watcher但没有成功.任何的想法？

12-26 14:59:39.715: E/AndroidRuntime(19494): FATAL EXCEPTION: main
12-26 14:59:39.715: E/AndroidRuntime(19494): java.lang.StackOverflowError
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at …

我构建一个Android应用程序,但我希望当我给它进行测试时,用户无法复制它,而且不应该在其他设备上安装apk？怎么可能.我可以保护那个apk吗？

我有一个活动,当我按下后退按钮然后它没有显示警告对话框.可能是什么问题呢？这是我的代码

@Override
public void onBackPressed() {
    // TODO Auto-generated method stub
    super.onBackPressed();

    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(LogFish.this);

                // set title
                alertDialogBuilder.setTitle("Exit");
                alertDialogBuilder.setIcon(R.drawable.ic_action_search);

                // set dialog message
                alertDialogBuilder
                    .setMessage("This action will cause you to abandon all changes on current new fish log. \n\nAre you sure you want to exit?")
                    .setCancelable(false)
                    .setPositiveButton("YES",new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,int id) {
                            // if this button is clicked, close
                            startActivity(new Intent(LogFish.this,MainActivity.class));
                            finish();

                        }
                      })
                    .setNegativeButton("NO",new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,int id) {
                            // …